INDUCTANCE DETECTOR OF FORCE Russian patent published in 2000 - IPC

FIELD: instruments. SUBSTANCE: device has cylindrical housing, membrane, which is designed as integral with housing, and inductance coil, which has stationary core, which is separated from membrane by air gap. Core is designed as autonomous open magnetic circuit, which is located in chamber under membrane and is rigidly connected to housing base. Side of membrane which is directed towards ends of magnetic circuit carries screen, which is made from non-magnetic material. Load weight may be measured by means of bulge, which is located on outer side of membrane in coaxial to inductance coil and is equipped with members for connection to loading board. Cross size of bulge is less than diameter of membrane by at least order of magnitude. Bulge may be shaped as cylinder with outer and inner threads. Bottom part of housing may have lugs with holes for mounting housing on stationary platform. EFFECT: linear dependence of output signal from value of load. 3 cl, 2 dwg